Quantitative determination of boron in steel by solid state nuclear track technique

M. Akram; A. Qureshi; N. Khattak; K. Mehmood; Fazal-ur-Rehman; I. Qureshi; H. Khan

doi:10.1007/bf02349857

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 240: Issue 3

Quantitative determination of boron in steel by solid state nuclear track technique

Authors:

M. Akram

M. Akram PINSTECH Radiation Physics Division P. O. Nilore Islamabad Pakistan

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A. Qureshi

A. Qureshi PINSTECH Radiation Physics Division P. O. Nilore Islamabad Pakistan

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N. Khattak

N. Khattak PINSTECH Radiation Physics Division P. O. Nilore Islamabad Pakistan

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K. Mehmood

K. Mehmood PINSTECH Radiation Physics Division P. O. Nilore Islamabad Pakistan

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Fazal-ur-Rehman

Fazal-ur-Rehman PINSTECH Radiation Physics Division P. O. Nilore Islamabad Pakistan

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I. Qureshi

I. Qureshi PINSTECH Radiation Physics Division P. O. Nilore Islamabad Pakistan

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H. Khan

H. Khan PINSTECH Radiation Physics Division P. O. Nilore Islamabad Pakistan

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Pages:: 823–827

Online Publication Date:: 10 Apr 2006

Publication Date:: 17 Jun 1999

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02349857

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Abstract

Trace amounts of boron present as impurity in steel can be accurately determined by measuring the α-yield in¹⁰B (n,α)⁷Li reaction, since this reaction has a very high cross section for thermal and epithermal neutrons while natural boron contains significant isotopic abundance of¹⁰B. The α-particles produced during¹⁰B (n,α)⁷Li nuclear reactions can be detected by solid state nuclear track detectors (SSNTDs) and the boron content and its distribution can be determined in a sample. The technique involves the simultaneous irradiation of unknown and known samples with thermal neutrons and recording the reaction products in SSNTDs as α-tracks. The α-tracks in the detectors are counted with the aid of an optical microscope after chemical etching. Boron concentration and distribution in the unknown sample is determined by counting and comparing the track density with that of standard sample of known boron concentration. The technique of SSNTDs has been applied by us to determine the distribution of trace amount of boron in commercial alloy steel using LR-115, CA80-15, CN-85 and CR-39 detectors. All these detectors pose various problems during reactor irradiation and etching. However, CR-39 has been found to be suitable for determining the magnitude and distribution of boron in steel. A brief description of the method and the optimum irradiation and etching conditions of various detectors for α-track revelation along with results for the estimation of boron in alloy steel are described in this paper.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)